111122120021210 has 8 divisors (see below), whose sum is σ = 200019816038196. Its totient is φ = 44448848008480.

The previous prime is 111122120021183. The next prime is 111122120021287. The reversal of 111122120021210 is 12120021221111.

It can be written as a sum of positive squares in 2 ways, for example, as 109586079545569 + 1536040475641 = 10468337^2 + 1239371^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5556106001051 + ... + 5556106001070.

Almost surely, 2^{111122120021210} is an apocalyptic number.

111122120021210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

111122120021210 is a deficient number, since it is larger than the sum of its proper divisors (88897696016986).

111122120021210 is a wasteful number, since it uses less digits than its factorization.

111122120021210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11112212002128.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 111122120021210 its reverse (12120021221111), we get a palindrome (123242141242321).

The spelling of 111122120021210 in words is "one hundred eleven trillion, one hundred twenty-two billion, one hundred twenty million, twenty-one thousand, two hundred ten".